<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <style>
      .px {
        width: 200px;
        height: 100px;
        margin: 100px auto;
        background-color: red;
        transform: skew(20deg);
      }
    </style>
  </head>
  <body>
    <p>
      transform: skew(20deg):斜切扭曲。第一个参数对应X轴，第二个参数对应Y轴。如果第二个参数未提供，则默认值为0
    </p>
    <div class="px"></div>
  </body>
</html>
